Spectrex 40/40U-UB - UV Flame Detector - Manual (Page 19)

TM 40/40U, Rev (7) July 2013
Performance Considerations 7
 For more details and guidelines for configuring, installing, operating and
service – see SIL-2 Features on page 65 and TÜV Report No.
968/EZ348.00/009.
1.4.5.4 EN54-10
The 40/40U and UB Optical Flame Detector is certified to EN54-10 and CPD.
 The detector has been tested and approved per EN54-10 by VdS.
 This test includes functional test, environmental test, EMI/EMC test and
software check.
 For more details see VdS Reports No's. BMA 12119 and BMA 12120.
1.5 Performance Considerations
This section describes performance aspects of the 40/40U and UB and
includes:
 Detection Sensitivity, page 7
 Cone of Vision, page 9
 False Alarms Prevention, page 10
 Visual Indicators, page 11
 Output Signals, page 12
 Detector Status, page 13
 Auxiliary Relay as End-of-Line Resistor, page 14
1.5.1 Detection Sensitivity
Detection sensitivity is the maximum distance at which the detector reliably
detects a specific size of fire and typical type of fuel (standard fire).
1.5.1.1 Standard Fire
Defined as a 1ft 2 / 0.1m 2 n-heptane pan fire, with maximum wind speed of
6.5 ft./sec (2 m/sec).
1.5.1.2 Sensitivity Ranges
The detector has two response levels:
 WARNING (Pre-alarm)
 ALARM
The detection distance for the ALARM level is 50 ft. (15m) from a standard
fire
The detection distance, for the WARNING level, is approximately 10% higher
than the ALARM distance.
For some typical ambient conditions the Zeta parameter as defined in NFPA
72 for the detector is 0.005 (1/meter).